Preamp for Bryston 4b3 & Tannoy Cheviots

I do not think I have used the Benchmark LA4 with the older ST and SST series. I used to own the ST and SST amps. Those amps were hot on top. The 4B3 does not seem that way.

If the 4B3 is similar to the CODA #8, #16, Sanders Magtech, or the KRELL Duo175XD then I would use the LA4 as my first choice. I used it with all 4 amps, and it was the best preamp I had on it. I tried about 7 different preamps from $800 to $8000. I owned the old Bryston BP-25 and that was not good in comparison to the LA4.

I will be selling my LA4 next week. I traded my Benchmark AHB2 amp today for the Benchmark HPA4 preamp. It is identical to the LA4, but it has an additional headphone amp.

If you want more warmth, I am fan of the new Schitt Mjolnir v3 (own it). A class A preamp, but not as good to me as the LA4. Though no remote.

Another preamp that is great (and I own) is the Holo Audio Serene. It is almost identical to the LA4, just a bit warmer.

I think all the preamps I listed would be good with the 4B3. Infact, I was thinking of getting the 4B3 from my Magnepan LRS+ and use with the Serene or LA4. I decided to use the CODA #16 instead.

BTW - do not get fooled by the lower prices of the preamps I am suggesting. They are really good, if you do not want the preamp to add too much to the sound, except the Mjolnir v3 which adds a lot.

Take a look at the Linear Tube Audio Microzotl line stage. Not your typical tube preamp. Tube life is very good and it is very dynamic. Not the lush sound of older tube preamps like vintage CJ, but good bass and a very natural sound in the right system. Fits right in with your budget as well.

I see a lot of music live, and having real instruments sound as real as possible and breadth and three dimensionality of soundstage are the goals I would like to maximize.

Given your stated objectives I’d skew toward a tube preamp.  The aforementioned LTA pre is an excellent recommendation, and I’d add the Aric Motherload XL, Atmasphere MP3 Mk3.3, and if you can stretch a bit or buy used the Backert Rhumba Extreme 1.3 is very worth considering.  Of course ARC and VAC should be on the radar as well.  One consideration may be if you want balanced connections.  I think your DAC is fully balanced and think your Bryston is too but not 100% sure on that.  Best of luck.

Thanks yyzsantabarbara for the detailed responses/suggestions. The LA4 does sound very good, and Cbrez I was up late reading about the LTA pre with great interest. And Soix I have added your suggestions to my research list and more importantly your reasoning from my primary goals in SQ improvement that tubes are likely to be the way to go. I had already been thinking about the balanced / straight issue, as I noted the LTA M has straight outputs only. Obviously I should be able to figure this out on my own, but if any of you are already aware as to whether any of the suggested preamps are fully balanced that would be helpful info.

Loving my Cary Audio SLP 05 with a smooth high power solid state amp.  It adds dynamics, color, class a smothness and a very large sound stage.  

perfect with the lower gain setting on the bryston.  

I would be patient and wait until see what the Bp-19 reviews say.  Espiecally if you already have a Bryston Amp.  Could be a match made where spirits in the sky hang out. 

The LA4 is fully balanced and supports the AES48 XLR standard. You do not need to go to town with the XLR between the preamp and amp. I do use a consumer hi-end XLR from my sources to the LA4.

That LTA M does sound interesting to me. I use 2 preamps hooked up to my CODA #16 amp. There is a switch in front that allows me to toggle between RCA and XLR input on the amp. I have all my sources hooked up to both preamps.

I occasionally use my Schitt Mjolnir v3 preamp connected by RCA, instead of the LA4 connected by XLR. I do this occasionally for the sake of variety. The LTA M seems like a better preamp than the Class A Mjolnir v3 that I currently use. The Schitt preamp definitely is not as good as the LA4, but it is a fun listen.

BTW - Benchmark has a 30-day home trial. My LA4 will go up for sale next Friday.

Obviously I should be able to figure this out on my own, but if any of you are already aware as to whether any of the suggested preamps are fully balanced that would be helpful info.

Of the ones I recommended the Atmasphere, Backert, ARC, and VAC preamps are fully balanced while the LTA and Aric are not.

I wrote to Bryston and they emailed me PDFs of this review of the Bryston BP-19 that was published last month  in “Trends Hofi Magazine” a mag from Quebec that I also see is linked to the Bryston Facebook page 

@soix Thanks for the mention, and I just wanted to clarify The Motherlode XL is fully balanced differential I/Os.

Thanks for the mention, and I just wanted to clarify The Motherlode XL is fully balanced differential I/Os.

@aricaudio Sorry, my bad and thanks for the correction.  Got the XL mixed up with the Mk. ll from Terry’s review.  I wasn’t aware there was a fully-balanced version so good to know!

@soix That's no problem! I came out with the XL version for all of the requests for a fully balanced architecture, and added some other key upgrades to it as well- Takman carbon film signal path resistors, Jupiter coupling caps and Clarity Cap SA film caps for the final PS decoupling caps. I will also be adding these upgrades to the ML II version to keep them on a level playing field aside from the balanced vs SE connections. Best regards, Aric

@aricaudio  Wow.  Getting fully-balanced architecture and several upgraded parts for only $1100 more for the XL seems like quite a bargain.  What specific performance differences do you hear in going from the Mk.II to the XL?

@soix I don’t want to derail the OP’s thread, I was just hoping to clarify the balanced nature of the ML XL, but in short the XL has more refinement and detail while still retaining the natural flow and harmonics of the ML II. Again the ML II will have these refinements as well. Best, Aric

LTA microZOTL is an excellent preamp. Tubes last up to 10,000 hours, and are not expensive to replace. They have a 14 day return policy. Trust me, it won’t take 14 days to see how good it is. 

IF you are thinking tube, be aware of the impedance mismatch. Should make you look to a Supratek.  (I own a 4b3 but not a Supratek)

The Motherload reviews great, but probably loses me based on it having 2 chassis that sit side by side rather than stack. My wife says I already have enough boxes on top of the cabinet that supports her TV, and if it won't go inside the cabinet where the current pre is, it's a non-starter. :(

However, when I just realized on taking a 2nd look that the Benchmark LA4 seems a really good value, assuming I like it, at $3050. I see why YYZSantaBarbara is moving to the BM HPA4, as for just $550 more you get a great headphone amp included in the same line stage pre.  I don't use headphones at all currently, but looking towards (semi-) retirement in a few years, I can see myself using one late at night when other folks are sleeping. Much cheaper than the Bryston BP-19 that seems to have comparable specifications.

Keep it simple and sweet. Look into purchasing a Conrad Johnson or Audi Research tube pre amp . Trust me you will be happy.